Abstract [en]

The aim of this master thesis is to design a test stand for a Hilti Diamond Coring System DD 150-U. The purpose of this stand is to be stable enough to carry out a variety of drilling processes and to allow Institute of Production Engineering and Laser Technology in Technical University in Vienna to conduct different tests and evaluations of the process. The first step is to create a detailed 3D model in SolidWorks 2013. It should eliminate the physical influence of a workers and allow to investigate the drilling process in detail. This means that the drilling operation itself should be conducted without the intervention of human force. In other words the goal is to provide constant force of drilling and easier positioning of the tool according to the location of the hole to be drilled. The design should be suitable for drilling in concrete blocks with size 20x20x20 mm and should assure stable and repeatable operating conditions. As soon as the test stand is created the assembly will be tested with respect to its stifness and stability. This will be done by creating FEM simulations of several critical parts and the whole test stand. The finite elements method (FEM) is a numerical analyses tool that is used for the calculation of the displacements, stresses and strains of those components under internal or external loads such as the force of drilling. These types of simulations are offering the possibility to lower development costs and to save time by eliminating the need of rework and prototypes. In order to provide a constant drilling force weights will be attached to the drilling machine.